The Egyptian Alfalfa Weevil and Its Control in Southern California12

Reynolds, H. T.; Anderson, L. D.; Deal, A. S.

doi:10.1093/jee/48.3.297

Cited by 5 publications

(3 citation statements)

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“…This weevil, although closely resembling H. postica, was identified as H. brunneipennis, the so-called Egyptian alfalfa weevil (97,98). Rather clear evidence indicates that the founders of this population were directly im ported into the Yuma Valley as aestivating adults on palm trees brought from Eg ypt (68). Hypera brunneipennis and H. postica are so closely re lated that their larval stages cannot be distinguished (3) and the adults differ only in the average size or dimensions of certain structures.…”

Section: Special Considerations In Classical Biological Controlmentioning

confidence: 99%

Biological Control of Insects

Bosch¹

1971

Annu. Rev. Ecol. Syst.

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Biological control of insects is a very broad subject and if in discussing it one were to tack on all of the biological manipulations utilized or sug CLASSICAL BIOLOGICAL CONTROLIn the writer's view, classical biological control is the use of exotic natu ral enemies against pest insects. It has its basis in the fact that when insects 45 4017 Annu. Rev. Ecol. Syst. 1971.2:45-66. Downloaded from www.annualreviews.org Access provided by City University London on 03/28/16. For personal use only. Quick links to online content Further ANNUAL REVIEWS Annu. Rev. Ecol. Syst. 1971.2:45-66. Downloaded from www.annualreviews.org Access provided by City University London on 03/28/16. For personal use only. Annu. Rev. Ecol. Syst. 1971.2:45-66. Downloaded from www.annualreviews.org Access provided by City University London on 03/28/16. For personal use only. Newton, R C., Jones, L. J. 1949. Field Studies of the Alfalfa Wee vil and its Environment. US Dep.

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Section: Special Considerations In Classical Biological Controlmentioning

confidence: 99%

Biological Control of Insects

Bosch¹

1971

Annu. Rev. Ecol. Syst.

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“…More recently, in the spring of 1939, the Egyptian alfalfa weevil, Hypera hrunneipennis (Boheman), was found in the Yuma Valley of Arizona and in the adjacent part of California. Ten years later it had spread to other desert regions of southern California and it now occurs over most of southern Cali fornia (Reynolds, Anderson, and Deal, 1955).…”

Section: [ 6 4 7 ]mentioning

confidence: 99%

The spread of the spotted alfalfa aphid,Therioaphis maculata(Buckton), in California

Smith¹

1959

Hilg

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The spotted alfalfa aphid, Therioaphis maculata (Buckton), has spread over a distance of 900 miles to infest 97.5 per cent of California's alfalfa acreage in the space of four years. This aphid was able to make a rapid spread because of its inherent abilities to disperse and increase and because it found an almost unlimited food supply, few natural enemies, and suitable climatic conditions. Spread was aided by commerce, but the aphid's ability to fly increased the rate of spread in most districts. Winds deterred the spread in some areas and increased it in others. Costs of alfalfa production have been increased markedly in the major alfalfaproducing regions.

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“…Once larvae are mature, they pupate and form small, silk cocoons spun near the base of the alfalfa plant. Adults have been shown to estivate, or enter into dormancy, in the summer months, leaving alfalfa fields to hide under plant litter or tree bark in field edges (Reynolds et al, 1955;Prokopy et al, 1967;Blickenstaff et al, 1972).…”

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Studying the efficacy of fipronil (WG 80%) against alfalfa weevil, Hypera postica (Coleoptera: Curculionidae)

Mohammadpour

Jafarlu

Soltani

2018

Acta Phytopathologica et Entomologica Hungarica

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The alfalfa weevil, Hypera postica Gyll. (Coleoptera: Curculionidae), is a key pest of alfalfa in different regions of the world where it causes sometimes complete crop destruction. Application of insecticides is the most important and major control method of this pest. The efficacy of fipronil (WG 80%), 50, 70 and 90 g/ha along with fosalon (EC 35%), 2.5 l/ha and malathion (EC 57%), 3 l/ha were assessed against this pest in the field based on a completely randomized block design. Based on Henderson-Tilton formula, on the fourteenth day after treatment, the minimum efficacy of fipronil, 50, 70 and 90 g/ha, fosalon, 2.5 l/ha and malathion, 3 l/ha bait was 80%, 89%, 98%, 76% and 75%, respectively. Results showed that fipronil (WG 80%) at 50-70 g/ha can be used against alfalfa weevil.

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The Egyptian Alfalfa Weevil and Its Control in Southern California12

Cited by 5 publications

References 0 publications

Biological Control of Insects

Biological Control of Insects

The spread of the spotted alfalfa aphid,Therioaphis maculata(Buckton), in California

Studying the efficacy of fipronil (WG 80%) against alfalfa weevil, Hypera postica (Coleoptera: Curculionidae)

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